svpwm

Program for Code Gerneration

在数字通信中，通常直接从接收到的数字信号中提取位同步信号，这种直接法按其提取同步信号的方式，大致可分为滤波法和锁相法。锁相法是指利用锁相环来提取位同步信号的方法，本设计方案就是基于锁相环的位同步提取方法，能够比较快速地提取位同步时钟，并且设计简单，方便修改参数。采用Quartus II设计软件对系统进行了仿真试验，并用Altera的Cyclone II系列FPGA芯片Ep2c5予以实现。(In digital communication, usually from receiving directly in digital signal extracted a synchronized signal, the direct method according to the extraction synchronized signal way, can be roughly divided into filtering method and phase lock method. Phase lock method is using of phase locked loop to extract a synchronized signal method, the design scheme is based on phase locked loop of a synchronous extraction method and can be quickly extract a synchronous clock, and design simple, convenient modification parameter. The Quartus II design software of the system, and the simulation test Altera Cyclone II FPGA chip to achieve Ep2c5 series.)

16QAM调制解调程序画出时域波形、 正交分量、同相分量波形，眼图，散点图等(16QAM modulation and demodulation process to draw time-domain waveform, quadrature components, in-phase component waveforms, eye diagrams, scatter plots, etc.)

基于fpga和51单片机的等精度频率计，通过fpga对信号进行采集，数据传给单片机计算，再由12864进行显示，可进行频率，周期，脉宽，占空比，幅值等的测量。(Fpga and 51 microcontroller based precision frequency meter, through fpga for signal acquisition, data to the microcontroller to calculate, and then by 12864 for display, can be measured frequency, period, pulse width, duty cycle, the amplitude and the like.)

布尔乘法器带testbench好用的工程啊(Boolean multiplier works with testbench nice ah)

说明：  LDPC码的FPGA实现，用verilog语言编写(FPGA implementation of LDPC code, written in Verilog language)

此功能是实现曼彻斯特编码的Verilog代码，经过在xilinx sp6上实际运行证实可行。(This function is to achieve the Manchester code Verilog code, through the Xilinx SP6 actual operation proved.)

以太网协议 TCP/IP/DHCP协议verilog实现(Ethernet IP/TCP/DHCP verilog source code)

国密SM4 verilog 实现 本算法是一个分组算法。该算法的分组长度为128比特，密钥长度为128比特。加密算法与密钥扩展算法都采用32轮非线性迭代结构。

带时钟分频器的计数器的代码是用verilog编写的。代码是用verilog HDL编写的，完全可以合成，可以在FPGA上实现；